Hi Indresh, It should be possible in any method associated with INVITE requested dialog, keeping in perspective that from and to headers can not change during the call. So PRACK/ACK/CANCEL/BYE/SUBSCRIBE/NOTIFY (in-dialog)/REFER have to have the same from/to header as initial INVITE which is allowed to have TEL URL. >>>From rfc 3261 section 12.2.1 its mentioned that To header should be filled with "remote URI" for mid dialog requests.and in its earlier section (12.1.2) it is saying that remote target uri must be set from the CONTACT header(which can never be a tel: uri for INVITE request). So shall we not make a conclusion that these mid dialog request's header field can never have a <tel:> uri in its To header.
Regards, Parveen On 27/03/07, Singh, Indresh (SNL US) <[EMAIL PROTECTED]> wrote: > > My thoughts on this inline.Hopefully it would help a little bit. > > Regards, > > Indresh K Singh > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Vikas > Gupta > Sent: Monday, March 26, 2007 8:47 AM > To: [email protected]; [email protected] > Subject: [Sip-implementors] tel uri query > > Hi, > I am currently implementing the support of <tel:> URI in our existing > user agent as per rfc 3966.I have some doubts regarding the same.Any > inputs > will be highly appreciated. > > 1)Is it possible to have tel: URI as request URI in methods other than > INVITE and REGISTER i.e in OPTION,PRACK,ACK,CANCEL,BYE, Notify,Subscribe > and > REFER methods ? > > >> It should be possible in any method associated with INVITE requested > dialog, keeping in perspective that from and to headers can not change > during the call. So PRACK/ACK/CANCEL/BYE/SUBSCRIBE/NOTIFY ( > in-dialog)/REFER have to have the same from/to header as initial INVITE > which is allowed to have TEL URL. > > > 2)From RFC 3396 and 3261 ,I concluded that tel: URI can be present in > INVITE > and REGISTER request in following headers. > For INVITE > tel: uri can be present in "request URI" , "From header", "TO header". > > >From Register > tel: URI can be present in "Contact header". > > for privacy it can also be present in p-preferred and p-asserted header. > > besides this ,is it possible to have <tel:> uri in any other > header(e.gRoute, record-route ,Via )? > > >> It should also be possible to have TEL URIs in Diversion Header. > > > > Regards, > Vikas > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > > _______________________________________________ > Sip-implementors mailing list > [email protected] > https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors > _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
